CN113106871A - Non-falling-to-ground dynamic height-adjusting support for steel plate composite beam bridge floor construction and construction method - Google Patents
Non-falling-to-ground dynamic height-adjusting support for steel plate composite beam bridge floor construction and construction method Download PDFInfo
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- CN113106871A CN113106871A CN202110360156.0A CN202110360156A CN113106871A CN 113106871 A CN113106871 A CN 113106871A CN 202110360156 A CN202110360156 A CN 202110360156A CN 113106871 A CN113106871 A CN 113106871A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 62
- 239000010959 steel Substances 0.000 title claims abstract description 62
- 238000010276 construction Methods 0.000 title claims abstract description 61
- 239000002131 composite material Substances 0.000 title claims abstract description 49
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 23
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- 238000000034 method Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000009415 formwork Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 3
- 238000009432 framing Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Abstract
The invention provides a non-falling dynamic height-adjusting support for steel plate composite beam bridge deck construction and a construction method, wherein the support comprises a linkage working lower platform, and the linkage working lower platform is provided with the bottom of a scissor rod lifting assembly; the top of the scissor rod lifting assembly is provided with a linkage working upper platform; a telescopic cylinder body is vertically arranged on the upper linkage working platform, a gear box is arranged at the top of the telescopic cylinder body, a screw rod with the top penetrating out of the telescopic cylinder body and the gear box is arranged in the telescopic cylinder body, and a template pedestal is arranged at the top end of the screw rod; the gear box is provided with a motor, the rotation of the motor drives the driven gear to rotate by taking the vertical direction as a rotating shaft, and the driven gear rotates by taking the vertical direction as the rotating shaft to drive the screw rod to vertically lift. The support can complete elevation initial adjustment through the scissor type electric lifting linkage platform, elevation fine adjustment can be realized through dynamic and accurate adjustment of spiral lifting of the motor, template elevation adjustment can be accurately completed through two elevation adjustment modes, and dynamic adjustment can be realized.
Description
Technical Field
The invention belongs to the field of roads and bridges, relates to steel plate composite beam bridge deck construction, and particularly relates to a non-falling-to-ground dynamic height-adjusting support for steel plate composite beam bridge deck construction and a construction method.
Background
The steel-concrete composite structure fully utilizes respective material properties of steel and concrete, has the advantages of light dead weight, high bearing capacity, high rigidity, good anti-seismic property and dynamic property, small section size of a member, quick and convenient construction and the like, and the steel plate composite beam is fully applied to bridge engineering in recent years, particularly to municipal bridges.
The construction of the steel plate composite beam is generally to assemble prefabricated steel beam segments on site, and after the steel beams are assembled, prefabricated assembled concrete plates or cast-in-place concrete are adopted. The precast assembled concrete slab only needs to pour concrete at the reserved notch, the workload of on-site wet operation is reduced, but the requirement on the processing precision of the precast slab is high, the notch is not only needed to be reserved at the precast slab end, but also the slab end notch is required to be aligned at the shear connector, and meanwhile, a construction steel bar is additionally arranged, so that the integral working performance of the concrete wing plate and the steel beam is directly influenced by the notch construction and pouring quality, and the large-scale popularization is still difficult. The cast-in-place construction is generally to set up a full framing or a beam column type framing, erect a formwork, cast a concrete bridge floor in situ, and the steel plate composite beam is good in overall working performance and still remains the mainstream construction method of the steel plate composite beam.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a non-falling dynamic height-adjusting support for steel plate composite beam bridge deck construction and a construction method thereof, so as to solve the problems that the falling support is inconvenient to set up and cannot be dynamically adjusted in real time in the steel plate composite beam construction process in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
a non-landing dynamic height-adjusting support for steel plate composite beam bridge deck construction comprises a linkage working lower platform, wherein a shear fork rod binding rail is fixedly arranged on the linkage working lower platform, one end of the bottom of a shear fork rod lifting assembly capable of moving in the shear fork rod binding rail is arranged in the shear fork rod binding rail, and the other end of the bottom of the shear fork rod lifting assembly is hinged to the linkage working lower platform; the linkage working lower platform is also provided with the tail end of an electric hydraulic telescopic rod, and the head end of the electric hydraulic telescopic rod is connected to the scissor rod lifting assembly to drive the scissor rod lifting assembly to lift; one end of the top of the scissor rod lifting assembly is arranged in a scissor rod binding rail at the bottom of the linkage working upper platform, one end of the top of the scissor rod lifting assembly can move in the scissor rod binding rail, and the other end of the top of the scissor rod lifting assembly is hinged to the bottom of the linkage working upper platform;
a telescopic cylinder body is vertically arranged on the linkage working upper platform, a gear box is arranged at the top of the telescopic cylinder body, a screw rod with the top penetrating through the telescopic cylinder body and the gear box is arranged in the telescopic cylinder body, and a template pedestal is arranged at the top end of the screw rod;
the gear box is provided with a motor, a rotating shaft of the motor is connected with a driving gear in the gear box, the driving gear is in meshing transmission with a driven gear in the gear box, the gear box vertically limits the driven gear, and the rotation of the motor drives the driven gear to rotate by taking the vertical direction as the rotating shaft;
the screw rod penetrates through the driven gear and is installed between the driven gear and the driven gear in a threaded fit mode, and the driven gear rotates by taking the vertical direction as a rotating shaft to drive the screw rod to vertically lift;
the linkage working lower platform is also matched with an I-beam fastener, and the linkage working lower platform is arranged on an I-beam of the steel plate composite beam through the I-beam fastener.
The invention also has the following technical characteristics:
the I-beam fastener comprises a pair of front fastener units and rear fastener units which have the same structure and are arranged in parallel, and the front fastener units and the rear fastener units respectively comprise a left fastener and a right fastener; the left fastener comprises an upper cross beam, an outer vertical beam and a lower cross beam which are integrally formed, and the right fastener comprises an upper cross beam, an outer wedge plate and a lower cross beam which are integrally formed; the lower cross beam of the front fastener unit and the lower cross beam of the rear fastener unit are fixedly connected together through a fastener base;
the opening between the upper beam and the lower beam of the left fastener and the right fastener is a buckling opening matched with the wing plates on two sides of the I-beam, and the opened right side of the buckling opening of the left fastener and the opened left side of the buckling opening of the right fastener are oppositely arranged;
the length of the lower cross beam of the left fastener and the length of the lower cross beam of the right fastener are larger than that of the upper cross beam, the lower cross beam of the left fastener and the lower cross beam of the right fastener are overlapped, pressed and fixedly connected through a fastener connecting bolt, and a plurality of fastener locking screws vertically penetrate through the upper cross beams of the left fastener and the right fastener;
the side wall of the upper beam of the right fastener is provided with a clamping groove for clamping the end part of the linkage work lower platform, two ends of the linkage work lower platform are respectively provided with corresponding clamping heads and are clamped in the clamping grooves formed in the front fastener unit and the rear fastener unit, and the buckling ports of the front fastener unit and the rear fastener unit are clamped on wing plates on two sides of the I-beam, so that the linkage work lower platform is installed on the I-beam of the steel plate composite beam.
The scissor rod lifting assembly comprises more than two groups of scissor rod lifting units which are arranged in parallel, each group of scissor rod lifting units comprises scissor rods which are arranged in a crossed manner through a plurality of pairs, the end parts of two pairs of vertically adjacent scissor rods are rotatably connected through a side rotating shaft, and the centers of each pair of scissor rods which are arranged in a crossed manner are connected through a central rotating shaft; more than two groups of scissor rod lifting units which are arranged in parallel share the same side rotating shaft and the same center rotating shaft at the corresponding same positions; the side rotating shafts at one end of the bottom and one end of the top of the scissor rod lifting assembly are arranged in the scissor rod binding rail.
The bottom that the screw rod is located telescopic cylinder body be provided with the anticreep axle, the anticreep is epaxial to be provided with the anticreep mound piece, the external diameter of anticreep mound piece is greater than the external diameter of screw rod.
The top of the gear box is also fixed with the bottom of a pair of fixed guide rods, the top of the fixed guide rods is fixedly provided with a guide pedestal, and the screw rod penetrates through the guide pedestal.
And a screw locking nut is arranged on the screw above the guide pedestal.
The bottom of the telescopic cylinder body is installed on the linkage work upper platform through a stable seat flange joint.
The invention also discloses a construction method for preventing the steel plate composite beam bridge deck from falling to the ground, which adopts the above-mentioned construction method for the steel plate composite beam bridge deck to use the non-falling dynamic height-adjusting support;
a plurality of non-landing dynamic heightening supports for steel plate composite beam bridge deck construction are mounted on an I-shaped beam of each steel plate composite beam, a linkage working lower platform at the bottom of the non-landing dynamic heightening support for the steel plate composite beam bridge deck construction is mounted on wing plates on two sides of the I-shaped beam of each steel plate composite beam through an I-shaped beam fastener, and a template pedestal at the top of the non-landing dynamic heightening support for the steel plate composite beam bridge deck construction is supported at the bottom of a bridge deck template.
Compared with the prior art, the invention has the following technical effects:
the support adopts the non-landing support to construct the steel plate combined beam bridge deck without being limited by the site, effectively plays the supporting role of the steel beams, does not occupy too much construction space between the beams, and can dynamically adjust the specific size of the support device according to the steel beams with different sizes on site.
The support can complete elevation initial adjustment through the scissor type electric lifting linkage platform, elevation fine adjustment can be achieved through dynamic and accurate adjustment of spiral lifting of the motor, template elevation adjustment can be accurately achieved through two elevation adjustment modes, and dynamic adjustment can be achieved.
(III) the support disclosed by the invention has a split design, and different elevations can be arranged among bridge deck beam cells needing cast-in-place according to the designed bridge deck cross slope, so that the angle control is realized.
(IV) the bracket of the invention can realize integral cast-in-place construction between the bridge deck beam cells, and compared with the prefabricated assembly construction, the bridge deck has good integrity, the construction quality is easy to control, the construction process is simple, the wet joint construction process after the prefabricated assembly is finished is reduced, and the construction cost is saved.
And (V) the construction method disclosed by the invention has the advantages that the dynamic control is electrically controlled during the construction period, so that the engineering accidents caused by manual adjustment disturbance of workers during the construction period are reduced, and the safety of the workers is ensured. After the cast-in-place concrete reaches the strength, the template can be removed under the electric control, the template removal efficiency is high, the stability is good, and the construction safety is ensured. The invention has simple and convenient operation in the installation, adjustment and removal processes and can be recycled according to different practical projects.
Drawings
Fig. 1 is a schematic view of the overall structure of a non-landing dynamic height-adjusting support for the construction of a steel plate composite beam bridge floor except for an I-beam fastener.
Fig. 2 is a schematic structural view of the screw.
Fig. 3 is a schematic view of the overall structure of an i-beam fastener.
FIG. 4 is a schematic view of the use state of the dynamic height-adjusting support without falling to the ground for constructing the bridge deck of the steel plate composite beam.
FIG. 5 is a schematic view of the supporting relationship between the dynamic height-adjusting support without falling to the ground and the deck formwork for the construction of the deck of the steel plate composite beam.
The meaning of the individual reference symbols in the figures is: 1-linkage working lower platform, 2-shear fork rod binding rail, 3-shear fork rod lifting assembly, 4-electric hydraulic telescopic rod, 5-linkage working upper platform, 6-telescopic cylinder body, 7-gear box, 8-screw rod, 9-template pedestal, 10-motor, 11-driving gear, 12-driven gear, 13-I-beam fastener, 14-anti-drop shaft, 15-anti-drop pier sheet, 16-fixed guide rod, 17-guide pedestal, 18-screw rod locking nut, 19-stabilizing seat flange joint, 20-I-beam, 21-steel plate composite beam, 22-bridge deck template, 23-shear nail and 24-concrete bridge deck;
301-scissor rod, 302-side rotating shaft and 303-side rotating shaft;
1301-front fastener unit, 1302-rear fastener unit, 1303-fastener base, 1304-left fastener, 1305-right fastener, 1306-fastening port, 1307-fastener connecting bolt, 1308-fastener locking screw, 1309-clamping groove and 1310-clamping head.
The present invention will be explained in further detail with reference to examples.
Detailed Description
When the traffic volume of the bridge is large when crossing a river ditch or under the bridge, the floor full-space support can not be erected for cast-in-place due to the limited conditions. In order to avoid or reduce the mutual influence between bridge construction and road traffic and limited space under a bridge, a feasible construction scheme of the non-landing support is required, and the whole working performance of the steel plate composite beam is ensured, and meanwhile, the cyclic utilization can be dynamically adjusted according to the actual elevation of the engineering template.
It is to be noted that all components in the present invention, unless otherwise specified, are all those known in the art.
The present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present invention fall within the protection scope of the present invention.
Example 1:
the embodiment provides a non-landing dynamic height-adjusting support for steel plate composite beam bridge deck construction, which comprises a linkage working lower platform 1, wherein a shear fork rod binding rail 2 is fixedly arranged on the linkage working lower platform 1, one end of the bottom of a shear fork rod lifting assembly 3 capable of moving in the shear fork rod binding rail 2 is arranged in the shear fork rod binding rail 2, and the other end of the bottom of the shear fork rod lifting assembly 3 is hinged to the linkage working lower platform 1 as shown in fig. 1 to 3; the linkage working lower platform 1 is also provided with the tail end of an electric hydraulic telescopic rod 4, and the head end of the electric hydraulic telescopic rod 4 is connected to the scissor rod lifting assembly 3 to drive the scissor rod lifting assembly 3 to lift; one end of the top of the scissor rod lifting assembly 3 is arranged in a scissor rod binding rail 2 at the bottom of the linkage work upper platform 5, one end of the top of the scissor rod lifting assembly 3 can move in the scissor rod binding rail 2, and the other end of the top of the scissor rod lifting assembly 3 is hinged to the bottom of the linkage work upper platform 5;
a telescopic cylinder body 6 is vertically arranged on the linkage work upper platform 5, a gear box 7 is arranged at the top of the telescopic cylinder body 6, a screw 8 with the top penetrating through the telescopic cylinder body 6 and the gear box 7 is arranged in the telescopic cylinder body 6, and a template pedestal 9 is arranged at the top end of the screw 8;
a motor 10 is arranged on the gear box 7, a rotating shaft of the motor 10 is connected with a driving gear 11 in the gear box 7, the driving gear 11 is in meshing transmission with a driven gear 12 in the gear box 7, the gear box 7 vertically limits the driven gear 12, and the rotation of the motor 10 drives the driven gear 12 to rotate by taking the vertical direction as the rotating shaft;
the screw 8 penetrates through the driven gear 12 and is installed between the driven gear 12 in a threaded fit mode, and the driven gear 12 rotates with the vertical direction as a rotating shaft to drive the screw 8 to vertically lift;
the linkage working lower platform 1 is also matched with an I-beam fastener 13, and the linkage working lower platform 1 is arranged on an I-beam 20 of a steel plate combination beam 21 through the I-beam fastener 13.
As a specific solution of this embodiment, the i-beam fastener 13 includes a pair of front fastener unit 1301 and rear fastener unit 1302, which are identical in structure and are arranged in parallel, and each of the front fastener unit 1301 and the rear fastener unit 1302 includes a left fastener 1304 and a right fastener 1305; the left fastener 1304 comprises an upper cross beam, an outer vertical beam and a lower cross beam which are integrally formed, and the right fastener 1305 comprises an upper cross beam, an outer wedge plate and a lower cross beam which are integrally formed; the lower cross beam of the front fastener unit 1301 and the lower cross beam of the rear fastener unit 1302 are fixedly connected together through a fastener base 1303;
the opening between the upper beam and the lower beam of the left fastener 1304 and the right fastener 1305 is a buckling opening 1306 matched with the wing plates on two sides of the I-beam, and the opened right side of the buckling opening 1306 of the left fastener 1301 and the opened left side of the buckling opening 1306 of the right fastener 1302 are oppositely arranged;
the length of the lower beam of the left fastener 1304 and the length of the lower beam of the right fastener 1305 are larger than that of the upper beam, the lower beam of the left fastener 1304 and the lower beam of the right fastener 1305 are overlapped and fixedly connected through a fastener connecting bolt 1307, and a plurality of fastener locking screws 1308 vertically penetrate through the upper beams of the left fastener 1304 and the right fastener 1305;
a clamping groove 1309 for clamping the end part of the linkage work lower platform 1 is formed in the side wall of the upper cross beam of the right fastener 1305, two ends of the linkage work lower platform 1 are respectively provided with a corresponding clamping head 1310 and are clamped in the clamping groove 1309 arranged oppositely to the front fastener unit 1301 and the rear fastener unit 1302, and the fastening ports 1306 of the front fastener unit 1301 and the rear fastener unit 1302 are clamped on the wing plates on two sides of the i-beam 20, so that the linkage work lower platform 1 is mounted on the i-beam 20 of the steel plate combination beam 21.
As a specific scheme of this embodiment, the scissor rod lifting assembly 3 includes more than two sets of scissor rod lifting units arranged in parallel, each set of scissor rod lifting unit includes scissor rods 301 arranged in a cross manner through a plurality of pairs, the end portions of two pairs of vertically adjacent scissor rods 301 are rotatably connected through an edge rotating shaft 302, and the centers of each pair of scissor rods 301 arranged in a cross manner are connected through a central rotating shaft 303; more than two groups of scissor rod lifting units which are arranged in parallel share the same side rotating shaft 302 and the same center rotating shaft 303 at the corresponding same positions; side shafts 302 at the bottom end and top end of the scissor lift assembly 3 are mounted within the scissor restraint rail 2.
As a preferable scheme of the embodiment, a bottom of the screw 8 in the telescopic cylinder 6 is provided with a disengagement preventing shaft 14, the disengagement preventing shaft 14 is provided with a disengagement preventing block 15, and an outer diameter of the disengagement preventing block 15 is larger than that of the screw 8. The anti-dropping pier sheet 15 is used for preventing the screw 8 from dropping out of the telescopic cylinder body 6 and the gear box 7 under the driving of the motor 10.
As a preferable scheme of this embodiment, the bottom ends of a pair of fixed guide rods 16 are further fixed to the top of the gear box 7, a guide pedestal 17 is fixedly mounted on the top ends of the pair of fixed guide rods 16, and the screw 8 passes through the guide pedestal 17. The guide pedestal 17 assists in guiding and supporting the screw 8, so that the screw 8 is more stable in the lifting and supporting processes.
As a preferable mode of the present embodiment, a screw lock nut 18 is mounted on the screw 8 above the guide base 17. The screw locking nut 18 vertically locks the lower position of the screw 8 on the guide pedestal 17 after the screw 8 is lifted to a desired position, so that the screw 8 is prevented from retracting downward after being pressed.
As a preferable mode of the present embodiment, the bottom of the telescopic cylinder 6 is mounted on the ganged working upper platform 5 through a stable seat flange joint 19. So that the telescopic cylinder 6 is more stably installed.
Example 2:
the embodiment provides a construction method for preventing a steel plate combined beam bridge deck from falling to the ground, which adopts the dynamic height-adjusting support for preventing the steel plate combined beam bridge deck from falling to the ground in the embodiment 1;
as shown in fig. 4 and 5, a plurality of non-landing dynamic heightening supports for steel plate composite beam bridge deck construction are mounted on the i-beam 20 of the steel plate composite beam 21, the lower linked working platform 1 at the bottom of the non-landing dynamic heightening support for steel plate composite beam bridge deck construction is mounted on the wing plates at both sides of the i-beam 20 of the steel plate composite beam 21 through i-beam fasteners 13, and the formwork pedestal 9 at the top of the non-landing dynamic heightening support for steel plate composite beam bridge deck construction is supported at the bottom of the deck formwork 22.
The specific implementation process of the construction method comprises the following steps:
and (3) erecting the formwork construction process:
step one, respectively overlapping the buckling ports 1306 of the left fastener 1304 and the right fastener 1305 of the i-beam fastener 13 with the lower flange of the i-beam 20 at four corner points of the bridge deck slab construction, connecting the lower beams of the left fastener 1304 and the right fastener 1305 through fastener connecting bolts 1307, and screwing the fastener locking screw 1308 to lock with the lower flange of the i-beam 20.
And step two, connecting clamping heads 1310 arranged on two sides of the linkage working lower platform 1 with clamping grooves 1309 on the upper cross beams of the front fastener unit 1301 and the rear fastener unit 1302 to form the cantilever working platform.
And step three, connecting the bottom of a telescopic cylinder body 6 of the spiral lifting instrument with a linkage working upper platform 5 through a stable seat flange joint 19, and finishing the assembly of three parts of I-beam fasteners 13 of the support, the scissor type electric hydraulic lifting linkage working platform and the electric dynamic accurate height-adjusting spiral lifting instrument.
And step four, primarily adjusting the non-landing dynamic height adjusting support for the steel plate composite beam bridge deck construction according to the actual height of the bridge deck template 22, and driving the side rotating shafts 302 at the bottom and the top of the scissor rod lifting assembly 3 to slide in the scissor rod binding rail 2 by driving the electric hydraulic telescopic rod 4 to extend, so that the movable scissor rod lifting assembly 3 is lifted to reach the initial height, and primary adjustment is realized.
Fifthly, determining the elevation of each angular point according to the bridge deck cross slope and the designed template elevation, measuring the HDIST1 of the designed elevation difference between the upper surface of the template pedestal 9 and the lower surface of the bridge deck template 22, controlling the rotation of the motor 10 to drive the driving gear 11 to be meshed with the driven gear 12, realizing the lifting of the screw 8 relative to the telescopic cylinder 6 and achieving the designed elevation of each angular point.
Further preferably, when the height difference HDIST1 is designed on the upper surface of the measurement template pedestal 9 and the lower surface of the bridge deck template 22, the distance measurement can be performed by combining the laser infrared distance meter and the reflector plate, and the distance measurement signal is transmitted to the PLC controller, and the display value displayed on the height display is DIST. The PLC is controlled through wireless remote control, the PLC controls the rotation of the motor 10 to drive the driving gear 11 to be meshed with the driven gear 12, and the screw 8 rises relative to the telescopic cylinder 6.
And step six, pre-pressing the bracket, calculating the dynamic adjustment height HDIST2 according to the pre-pressed value, performing dynamic accurate adjustment, pouring the concrete bridge deck 24, and performing real-time adjustment according to the height value of each corner point in the concrete pouring stage.
And (3) form removal construction process:
step one, after the concrete reaches the strength, the electric hydraulic telescopic rod 4 is driven to contract, so that the scissor rod lifting assembly 3 descends, and the bridge deck formwork 22 is taken down after the scissor rod lifting assembly descends to a certain height.
And step two, the telescopic cylinder body 6 is detached from the stable seat flange joint 19, namely the electric dynamic accurate height-adjusting spiral lifting instrument is detached from the linkage work lower platform 1, namely the scissor type electric hydraulic lifting linkage work platform is detached from the I-beam fastener 13, the fastener locking screw 1308 is unscrewed, the locking is released from the lower flange of the I-beam 20, the connection between the fastener connecting bolt 1307 and the left fastener 1304 and the right fastener 1305 is released, and the mold detaching work is completed.
Claims (8)
1. The non-landing dynamic height-adjusting support for the steel plate composite beam bridge floor construction is characterized by comprising a linkage working lower platform (1), wherein a shear fork rod binding rail (2) is fixedly arranged on the linkage working lower platform (1), one end of the bottom of a shear fork rod lifting assembly (3) which can move in the shear fork rod binding rail (2) is arranged in the shear fork rod binding rail (2), and the other end of the bottom of the shear fork rod lifting assembly (3) is hinged to the linkage working lower platform (1); the tail end of an electric hydraulic telescopic rod (4) is also arranged on the lower linkage working platform (1), and the head end of the electric hydraulic telescopic rod (4) is connected to the scissor rod lifting assembly (3) to drive the scissor rod lifting assembly (3) to lift; one end of the top of the scissor rod lifting assembly (3) is arranged in a scissor rod binding rail (2) at the bottom of the linkage work upper platform (5), one end of the top of the scissor rod lifting assembly (3) can move in the scissor rod binding rail (2), and the other end of the top of the scissor rod lifting assembly (3) is hinged to the bottom of the linkage work upper platform (5);
a telescopic cylinder body (6) is vertically arranged on the linkage work upper platform (5), a gear box (7) is arranged at the top of the telescopic cylinder body (6), a screw rod (8) with the top penetrating through the telescopic cylinder body (6) and the gear box (7) is arranged in the telescopic cylinder body (6), and a template pedestal (9) is arranged at the top end of the screw rod (8);
the gear box (7) is provided with a motor (10), a rotating shaft of the motor (10) is connected with a driving gear (11) in the gear box (7), the driving gear (11) is in meshing transmission with a driven gear (12) in the gear box (7), the gear box (7) vertically limits the driven gear (12), and the rotation of the motor (10) drives the driven gear (12) to rotate by taking the vertical direction as the rotating shaft;
the screw (8) penetrates through the driven gear (12) and is installed between the screw and the driven gear (12) in a threaded fit mode, and the driven gear (12) rotates by taking the vertical direction as a rotating shaft to drive the screw (8) to vertically lift;
the linkage working lower platform (1) is also matched with an I-beam fastener (13), and the linkage working lower platform (1) is arranged on an I-beam (20) of the steel plate combination beam (21) through the I-beam fastener (13).
2. The dynamic height-adjusting support without falling to the ground for the bridge deck construction of the steel plate composite beam of claim 1, wherein the I-beam fastener (13) comprises a pair of front fastener unit (1301) and rear fastener unit (1302) which are identical in structure and are arranged in parallel, and the front fastener unit (1301) and the rear fastener unit (1302) comprise a left fastener (1304) and a right fastener (1305); the left fastener (1304) comprises an upper cross beam, an outer vertical beam and a lower cross beam which are integrally formed, and the right fastener (1305) comprises an upper cross beam, an outer wedge plate and a lower cross beam which are integrally formed; the lower cross beam of the front fastener unit (1301) and the lower cross beam of the rear fastener unit (1302) are fixedly connected together through a fastener base (1303);
the opening between the upper cross beam and the lower cross beam of the left fastener (1304) and the right fastener (1305) is a buckling opening (1306) matched with wing plates on two sides of the I-beam, and the opened right side of the buckling opening (1306) of the left fastener (1301) and the opened left side of the buckling opening (1306) of the right fastener (1302) are oppositely arranged;
the length of the lower beam of the left fastener (1304) and the length of the lower beam of the right fastener (1305) are larger than that of the upper beam, the lower beam of the left fastener (1304) and the lower beam of the right fastener (1305) are overlapped and fixedly connected through a fastener connecting bolt (1307), and a plurality of fastener locking screw rods (1308) vertically penetrate through the upper beams of the left fastener (1304) and the right fastener (1305);
the side wall of the upper cross beam of the right fastener (1305) is provided with a clamping groove (1309) for clamping the end part of the lower linkage work platform (1), two ends of the lower linkage work platform (1) are respectively provided with a corresponding clamping head (1310) and are clamped in the clamping groove (1309) formed by the front fastener unit (1301) and the rear fastener unit (1302) oppositely, buckling ports (1306) of the front fastener unit (1301) and the rear fastener unit (1302) are clamped on wing plates on two sides of the I-beam (20), and the installation of the lower linkage work platform (1) on the I-beam (20) of the steel plate combination beam (21) is realized.
3. The dynamic non-landing heightening bracket for the steel plate composite beam bridge floor construction according to claim 1, wherein the scissor rod lifting assembly (3) comprises more than two sets of scissor rod lifting units arranged in parallel, each set of scissor rod lifting unit comprises a plurality of pairs of scissor rods (301) arranged in a crossed manner, the ends of two pairs of vertically adjacent scissor rods (301) are rotatably connected through an edge rotating shaft (302), and the centers of each pair of scissor rods (301) arranged in a crossed manner are connected through a central rotating shaft (303); more than two groups of scissor rod lifting units which are arranged in parallel share the same side rotating shaft (302) and the same center rotating shaft (303) at the corresponding same positions; the side rotating shafts (302) at one end of the bottom and one end of the top of the scissor rod lifting assembly (3) are arranged in the scissor rod binding rail (2).
4. The dynamic non-landing height-adjusting support for the steel plate composite beam bridge floor construction according to claim 1, wherein a release-preventing shaft (14) is arranged at the bottom of the screw (8) in the telescopic cylinder body (6), a release-preventing pier sheet (15) is arranged on the release-preventing shaft (14), and the outer diameter of the release-preventing pier sheet (15) is larger than that of the screw (8).
5. The dynamic non-landing height-adjusting bracket for the construction of the steel plate composite beam bridge floor according to claim 1, wherein the bottom ends of a pair of fixed guide rods (16) are further fixed on the top of the gear box (7), a guide pedestal (17) is fixedly arranged on the top ends of the pair of fixed guide rods (16), and the screw rod (8) penetrates through the guide pedestal (17).
6. The dynamic height-adjusting support without falling to the ground for the construction of the steel plate composite beam bridge floor according to claim 1, characterized in that a screw locking nut (18) is installed on the screw (8) above the guide pedestal (17).
7. The dynamic height-adjusting support without falling to the ground for the construction of the steel plate composite beam bridge floor according to claim 1, characterized in that the bottom of the telescopic cylinder body (6) is installed on the upper linkage work platform (5) through a stable seat flange joint (19).
8. A construction method for preventing a steel plate composite beam bridge deck from falling to the ground is characterized in that the method adopts the dynamic height-adjusting support for preventing the steel plate composite beam bridge deck from falling to the ground, which is used for the construction of the steel plate composite beam bridge deck, according to any one of claims 1 to 7;
a plurality of non-landing dynamic heightening supports for steel plate composite beam bridge deck construction are mounted on an I-shaped beam (20) of a steel plate composite beam (21), a linkage working lower platform (1) at the bottom of the non-landing dynamic heightening support for the steel plate composite beam bridge deck construction is mounted on wing plates on two sides of the I-shaped beam (20) of the steel plate composite beam (21) through a pair of I-shaped beam fasteners (13), and a template pedestal (9) at the top of the non-landing dynamic heightening support for the steel plate composite beam bridge deck construction is supported at the bottom of a bridge deck template (22).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110360156.0A CN113106871B (en) | 2021-04-02 | 2021-04-02 | Non-falling-to-ground dynamic height-adjusting support for steel plate composite beam bridge floor construction and construction method |
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| CN202110360156.0A CN113106871B (en) | 2021-04-02 | 2021-04-02 | Non-falling-to-ground dynamic height-adjusting support for steel plate composite beam bridge floor construction and construction method |
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| CN113106871A true CN113106871A (en) | 2021-07-13 |
| CN113106871B CN113106871B (en) | 2022-08-05 |
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